Are rainouts credited to the day it’s (originally) scheduled, or the day it’s played on?
This article seems to indicate that it last happened to the Cubs 40 seasons ago.
The Cubs didn’t play any games from October 1 to October 3, 1986, and the last two games were at home while the preceding game was in Philadelphia so it appears they were rained out in two different cities.
The original claim sounds like some journalist repeated AI bullshit.